fix: 工作台页面，整体ui功能优化。

src/pages/work/bill/creditInstallmentHistory/addEdit.vue

@@ -2,8 +2,11 @@
     <view class="container" style="paddingBottom:1rpx;">
       <u-navbar
 			leftIconSize="40rpx"
-			leftIconColor="#333333"
+			leftIconColor="#ffffff"
 			title="信用卡分期账单"
+			:titleStyle="{color: '#ffffff', fontSize: '36rpx', fontWeight: '600'}"
+			:bgColor="'transparent'"
+			:customStyle="{background: 'linear-gradient(135deg, #667eea 0%, #764ba2 100%)', boxShadow: '0 4rpx 12rpx rgba(102, 126, 234, 0.3)'}"
 		>
 		</u-navbar>
       <view class="section">
@@ -59,13 +62,17 @@
             </u-form-item>
           </u--form>
           <view class="form-btn">
-            <u-button type="primary" text="提交" @click="submit"></u-button>
+            <u-button type="primary" text="提交" @click="submit" 
+              customStyle="background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); border: none; border-radius: 16rpx; font-size: 32rpx; font-weight: 600; height: 96rpx; box-shadow: 0 4rpx 12rpx rgba(102, 126, 234, 0.3);"></u-button>
           </view>
         </view>
       </view>
       <u-toast ref="uToast"></u-toast>
       <u-picker itemHeight="88" :show="showTeam" :columns="settleStateList" keyName="dictLabel" @cancel="handleCancel"
-        @confirm="handleConfirm"></u-picker>
+        @confirm="handleConfirm" 
+        title="选择结清状态"
+        :confirmColor="'#667eea'"
+        :cancelColor="'#666666'"></u-picker>
         <u-datetime-picker
 			:show="datePickShow"
 			mode="date"
@@ -74,6 +81,9 @@
 			@cancel="datePickShow=false"
 			@confirm="datePickConfirm"
 			itemHeight="88"
+			title="选择分期日期"
+			:confirmColor="'#667eea'"
+			:cancelColor="'#666666'"
 		></u-datetime-picker>
     <u-datetime-picker
 			:show="closeDatePickShow"
@@ -83,9 +93,15 @@
 			@cancel="closeDatePickShow=false"
 			@confirm="closeDatePickConfirm"
 			itemHeight="88"
+			title="选择关闭日期"
+			:confirmColor="'#667eea'"
+			:cancelColor="'#666666'"
 		></u-datetime-picker>
     <u-picker itemHeight="88" :show="showOnlineLend" :columns="bankCardLendList" keyName="nameCode" @cancel="handleOnlineLendCancel"
-        @confirm="handleOnlineLendConfirm"></u-picker>
+        @confirm="handleOnlineLendConfirm" 
+        title="选择信用卡"
+        :confirmColor="'#667eea'"
+        :cancelColor="'#666666'"></u-picker>
     </view>
   </template>